Thyroid Gland, Follicle, Epithelium - Hyperplasia - Gallery

Thyroid gland, Follicle, Epithelium - Hyperplasia in a male B6C3F1 mouse from a chronic study. Proliferative projections of hyperplastic epithelium are present in a single follicle (arrow).

Thyroid gland, Follicle, Epithelium - Hyperplasia in a male B6C3F1 mouse from a chronic study. Higher magnification of Figure 1 shows the proliferative projections of hyperplastic epithelium in more detail.

Thyroid gland, Follicle, Epithelium - Hyperplasia in a male F344/N rat from a subchronic study. Some degree of hypertrophy is present in this example of minimal epithelial hyperplasia.

Thyroid gland, Follicle, Epithelium - Hyperplasia in a male F344/N rat in a subchronic study. There is minimal hyperplasia of the follicular epithelium with crowding of the nuclei and minimal protrusion into the follicular lumen.